title: Intravertebral pneumatocysts of the cervical spine.
abstract: BACKGROUND
  The aim of this study was to investigate the prevalence of intravertebral pneumatocyst (IVP) of the cervical spine by age group, compared with that of intradiscal vacuum (IDV).
  
  
  METHODS
  We investigated 500 consecutive patients who underwent cervical computed tomography (CT) from May 2012 to May 2013 for various indications. CT datasets were assessed for the presence of IVPs and IDVs with stratification by age.
  
  
  RESULTS
  IVPs of the cervical spine were detected in 8 % (7 of 86 subjects) of patients in their forties or below, 30 % (23 of 75) in their fifties, 49 % (67 of 136) in their sixties, 55 % (76 of 137) in their seventies, and 60 % (40 of 66) in their eighties or over. IDVs of the cervical spine were detected in 6, 25, 48, 54, and 57 %, respectively. Coexistence of both phenomena was identified in 4, 17, 33, 40, and 43 %, respectively.
  
  
  CONCLUSIONS
  IVPs of the cervical spine are a common incidental finding, increasing in prevalence with age and more common than IDV in all age groups.
authors.affiliation: Department of Radiology, Kinki University School of Medicine, 377-2 Ohnohigashi, Osaka-sayama City, Osaka, 589-5811, Japan.
authors.forename: Yuko
authors.initials: Y
authors.lastname: Matsukubo
authors.forename: Nobuo
authors.initials: N
authors.lastname: Kashiwagi
authors.forename: Masanobu
authors.initials: M
authors.lastname: Uemura
authors.forename: Sachiyo
authors.initials: S
authors.lastname: Tatsumi
authors.forename: Hiroto
authors.initials: H
authors.lastname: Takahashi
authors.forename: Tomoko
authors.initials: T
authors.lastname: Hyodo
authors.forename: Noriyuki
authors.initials: N
authors.lastname: Tomiyama
authors.forename: Ryuichiro
authors.initials: R
authors.lastname: Ashikaga
authors.forename: Kazunari
authors.initials: K
authors.lastname: Ishii
authors.forename: Takamichi
authors.initials: T
authors.lastname: Murakami
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D001845:Bone Cysts / Q000000981:diagnostic imaging* / Q000453:epidemiology*; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging*; D002648:Child; D005260:Female; D006801:Humans; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012680:Sensitivity and Specificity; D013122:Spinal Diseases / Q000000981:diagnostic imaging* / Q000453:epidemiology*; D014057:Tomography, X-Ray Computed / Q000706:statistics & numerical data*; D055815:Young Adult